Troubleshooting Using The Sid - Alpha Technologies CFR 1500 Operator's Manual

6.7

Troubleshooting Using the SID

The OUTPUT LOAD LEDs, located on the front panel of the Standard Interface
Device, are designed to display UPS fault conditions once the unit has detected an
internal problem, indicated by the SERVICE LED. This information provided by the
LEDs is extremely useful during troubleshooting and maintenance. If the UPS is
equipped with an IID, refer to its operator's manual for further troubleshooting
information.
If your UPS SERVICE LED is ON, press and hold the ALARM OFF switch for
approximately 3 seconds. The OUTPUT LOAD LEDs indicate:
LED
LED
OVERLOAD
OVERLOAD
100%
100%
75%
75%
50%
50%
25%
25%
SERVICE LED
STATUS
Stat
Flashing
ON
Flashing
ON
Flashing
ON
Flashing
ON
Flashing
ON
ALARM OFF Switch
OUTPUT LOAD LEDs
Standard Interface Device - Fault Indicators
Standard Interface Device (Troubleshooting)
CONDITION
Not Applicable
Fast Detector / Low Sensitivity Fault
PLL Fault
High Ambient Temperature
Output Voltage High
Output Voltage Short Circuit
PWR BRD Fault / -5 VDC Failure
PWR BRD EPROM Failure
Self-Test Failure
Battery Over-Voltage / Charger Fault
Fig. 40
61
6. MAINTENANCE